Leather-working machine



R. F. WHITNEY. LEATHER WORKING MACHINE.

APPLICATION FILED AUG.H, 1919.

IN V EN TOR.

ATTORNEY.

Patented June 7, 1921.

ROBERT F. WHITNEY, OF WINCHESTER, MASSACHUSETTS.

LEATHER-WORKING MACHINE.

Specification of Letters Patent.

Application flied August 11, 1919. Serial No. 316,583.

To all whom it may concern:

Be it known that I, ROBERT F. WHITNEY, a citizen of the United States, residing at \Vinchester, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements 1I1 LeatherrVVorking Machines, of which the following is a specification.

This invention relates to leather working machines and its object is to provide for effectively stretching, setting, or putting out leather.

The invention is illustrated by the accompanying drawings in which:

Figure 1 is an end elevation of the machine partly broken away and partly in section; and

Fig. 2 is an elevation partly broken away of the bed plate.

The invention, which constitutes a leather working machine in and of itself, is particularly well adapted and is intended for use also with that type of machine in which a bed roll or other support for the hide or skin is mounted in swinging arms or other movable members which serve to carry it to and away from the work roll. The drawings illustrate a well known type of machine comprising the frame 1, whereon are rotatably mounted the work roll 2 and feed roll 3; while the bed roll 4: is rotatably mounted in swinging arms 5, pivoted to the frame at 6; means being provided for swinging the arms and the several rolls being geared and driven as desired. With this type of machine as is well known, the rolls being separated, the hide-or skin 7 is placed over the bed roll, the rolls are brought together, and the hide or skin travels upwardly between the rotating rolls.

One purpose of the present invention is to provide for thoroughly stretching, setting, or putting out leather, preparatory to its being operated on by the work roll; and to accomplish this purpose I employ the following described mechanism The support 8 extends horizontally the length of the machine and is affixed at its ends to the inner face of the swinging arms 5; and a similar oppositely disposed support 9 is aflixed at its ends to the inner face of the brackets 10 adj ustably, fixedly mounted in guide-ways 11 vertically disposed at the ends of frame 1; vertical sections 8 and 9 of these supports 8 and 9 forming plain or grooved bed plates; which bed plates, preferably of metal, may, if desired, be separately made and afiixed to saidsupports.

A series of blades 12 adapted to press the hide or skin against the oppositely disposed bed plate 9 are removably mounted in holders 13 axially journaled in bearings 14: disposed on support 8; each holder being furnished with an arm 15, the outer end of which is adjustably disposed between and in engagement with a stop 16 and a spring 17 and the several stops and springs being mounted on the support 8; whereby the axial movement of theholders is cushioned and the movement of the blades toward the oppositely disposed bed plate 9 is limited.

Two similar series of blades 12, 12 are similarly disposed on the support 9 and are adapted to press the hide or skin against the oppositely disposed bed plate 8*.

v A blade 18 extends the length of the machine and is adjustably aflixed to the top of the support 8. The arrangement of the rolls,'the bed supports and the blades may be varied as desired, but it is preferably such that when in operation the hide or skin, as it travels upwardly, travels toward and Patented June t, 1921..

away from the edges of the blades at predetermined angles.

The bed plates 8", 9 may be grooved in any desired manner, but preferably in that shown, that is, obliquely and in opposite directions from the centralvertical line outwardly.

The spring-controlled blades do away with the necessity of employing cushioned bed plates; and if these are made of metal, either plain or grooved, the wet leather will be drawn across them and spread out more readily than with the customary leather or rubber arrangement. And, moreover, where metal blades and metal bed plates are employed, the water is more readily removed rom the leather. By using blades set at an angle, as indicated, the leather is drawn under an edge of the blade, thus increasing the intensity of the pressure without exerting an undue pull on the leather. The grooves provide an escape for the water pressed or squeezed from the leather.

I claim 1. In a leather Working machine of the character described, a pair of co-acting, horizontally disposed, stretching and squeezing members, between which the leather is drawn; one member bein furnished with a vertically disposed bed p ate; and the other axial movement of the blades is cushioned and their movement toward the oppositely dispose-d bed plate limited.

2. In a leather Working machine of the character described, a pair of co-acting; horizontally disposed, stretching and squeezing members, between which the leather is drawn; each member being furnished with a vertically disposed bed plate;-and each member being furnished also with one or more series of angularly disposed, spring- -c0ntrolled blades axially journaled thereon and adapted to press the leather against the 20.

bed plate of the other member.

3. In a leather working machine of the character described, a pair of co-acting horizontally disposed, stretching and squeezing members, between which the leather is drawn; each member being furnished with a vertically disposed bed plate; and each member being furnished also with one or more series of angularly disposed blades axially journaled thereon andfurnished, each, with an arm adjustably disposed between and in engagement Wltll a stop and a spring mounted on said last mentioned characted described, a pair ofco-acting,

horizontally disposed, stretching and squeezmg members, between which the leather is drawn each member being furnished with a vertically disposed bed plate; and each member bein furnished also with one or more series oi angularly disposed, cushioned blades adapted to press the leather against the bed plate of the other member.

In testimony whereof I have aflixed my signature.

ROBERT F. WHITNEY. 

